Basic Dimensions

Name of Dimension Dimension Units
Length L meter, foot, mile, light year
Time T second, hour, day, year
Mass M gram, kilogram
Real number (aka “dimensionless”) 1 = M^0L^0T^0 hundred, thousand, percent, radian
Area L^2 square foot, square meter, hectare, acre
Volume L^3 cubic meter, cc, cubic foot, liter, gallon
Velocity L/T meter/sec, mile/hour
Acceleration L/T^2 meter/second^2, foot/second^2
Force, Mass x Acceleration ML/T^2 Newton, pound
Energy, Work, Force x Distance, Power x Time ML^2/T^2 Joule, BTU, calorie, kilowatt-hour, foot-pound
Power, Energy/Time ML^2/T^3 Watt, horsepower
Mass Density M/L^3 kilogram/meter^3
Pressure, Force/Area M/(LT^2) newton/meter^2, pascal, psi (pounds per square inch), mm Hg, atmosphere
Mass flux (Mass flow) M/T kilogram/second
Mass flux density M/(TL^2) (kilogram/second)/meter^2